For some time we thought that we were seeing just a single white species from the Gymnodorididae family. Then we realised that they are not all the same… and then we found a black coloured one too…
Again these nudibranch are only encountered at our local dive sites – no sightings when diving beyond Koh Phangan.

Gymnodoris alba

Previously confused by us with another small, white Gymnodorid Nudibranch - G. citrina, listed below

Gymnodoris citrina

We have spotted this particular small, carnivorous Gymnodorid only once, it seems.

Gymnodoris cf nigricolor

Very small, super active, and totally black in appearance.

Gymnodoris species

Stills taken from a fascinating video of a high speed nudie and a static sap sucker.